Monkey-wrench.



` P. B. GUTLBR.

MONKEY WRENCH. APPLICATION FILED IAB.. 10, 1909,

972,342. I Patented 0011.111910.

FANNIE B. CUTLER, OF RONALD TOWNSHIP, IONIA. COUNTY, MICHIGAN.

MONKEY-WRENCH.

Specification of Letters Patent.

Application filed March 10, 1909.

Patented Oct. 11, 1910. Serial No. 482,633.

To all whom it may concern.'

Be it known that I, FANNIE B. CUTLER, a citizen of the United States,residing in the township of Ronald, county of Ionia, and State ofMichigan, have invented new and useful Improvements in Monkey- Wrenches,of which the following is a specification.

My invention relates to monkey wrenches, and its object is to secure awrench of simple construction, which may be operated as quickly, easilyand efficiently as possible.

As hereinafter more fully described, it consists of a wrench having twoparallel bars between the handle and the fixed head, a dog catchfastened between the two bars by a specially constructed pivot, amovable head sliding on the bars, and an aperture in which a finger maybe inserted to assist in adjusting the jaws about the object to beengaged. It also has a strong spiral spring between the handle and themovable jaw, which is inclosed in two cylinders, the lower part of thespring being in the cylinder which is attached to the handle, and theupper part in a larger cylinder which is fastened to the jaw, and whichslides down over the lower one when the jaws are drawn apart. The uppercylinder has teeth on the side toward the bars, which are engaged byteeth on the dog catch when it is placed in position.

In the following detailed description reference is had to theaccompanying drawings, in whichj Figure l is a view of the wrench withthe jaws closed and the dog turned so that its teeth are engaged withthe teeth on the cylinder. Fig. 2 is a longitudinal sect-ion. Figs. 3, 4and 5 are cross sections on the lines 3-3, 4 4, and 5 5, respectively,in Figs. l and 2.

Between the handle and ferrule Gr and the fixed head and upper jaw,shown in Figs. l and 2, are two parallel bars F, side views of which aregiven in Figs. l and 2, and a cross section in Fig. 5. The dog catch D,best shown in Fig. 2, has teeth on the free end which engage with theteeth on the upper cylinder A when turned in the right position by thepivot E, which is rotatably mounted in the bars and provided with anintermediate square portion on which is mounted the dog D. The movablejaw of the wrench, shown in Figs. l and 2, envelops the two parallelbars as shown in Fig. 5. There is also an aperture C in the movable jawof the wrench. Between the ferrule and the movable jaw of the wrenchthere is a strong splral spring H, a portion of which is shown in Fig.2. The spring is sheathed in two cylinders A and B, as shown in Figs. 1and 2. On the side of the upper cylinder are teeth which engage with theteeth on the dog catch, as shown in the drawings, and before described.

In operating the wrench, a finger is placed 1n the aperture in themovable aw, pulling it away from the fixed jaw until the jaws can beplaced about the object to be engaged thereby. Then the movable jaw isreleased, the spring pressing it against the object to be engaged. Incase the spring is not strong enough for the work, the dog is turned toengage the teeth on the cylinder. When the object is to be released theoperation is reversed, the dog being turned back between the bars whereit is kept when not in use, and the movable jaw pulled back by thefinger in the aperture.

I claim as my invention, and desire to secure by Letters Patent of theUnited States 1. As an improvement in wrenches, the combination of afixed head a handle and parallel bars connecting the same, a toothed dogcatch pivoted between the bars, a sliding aw on said bars provided withan aperture, a strong spiral spring between the handle and movable jaw,normally forcing the latter toward the liXed jaw, two hollow cylindersincasing the spring, the smaller attached to the handle and the largerto the movable jaw, the larger cylinder having teeth on the side towardthe bars, to be engaged by the teeth on the dog catch, as set forth.

2. As an improvement in wrenches, the combination of a fixed head ahandle and parallel bars connecting the same, a dog provided with teethon the free end pivoted between the bars, the dog being rotatable toengage and disengage its teeth, with teeth on a cylinder carried by asliding jaw on said bars, said sliding jaw provided with an aperture,aStrong spiral spring between the engaged by the teeth on the catch, Aasset handle and the movable asv, normally forcforth.

in@ the atter toward the Xed 'aW, two hol- T T lowv cylinders ncasng theJspring, the FABBIE B CUTLER' smaller attached to the handle and thelarger Vtnesses:

to the movable jaw, the larger cylinder hav- SARAH L. JEFFERS,

ing teeth on the side toward the bars, to be IRA S. JEFFERS.

